malus vs wax apple

malus

noun
  • A plant of the genus Malus (the apples). 

  • The loss or return of performance-related compensation originally paid by an employer to an employee as a result of the discovery of a defect in the performance. 

  • A penalty or negative thing. 

wax apple

noun
  • the fruit of this plant 

  • a tropical plant, Syzygium samarangense, bearing an edible fruit 

How often have the words malus and wax apple occurred in a corpus of books? (source: Google Ngram Viewer )